A six-year experiment was carried out with natural variation in temperature and rainfall during grain filling period between 2011–17 growing seasons to investigate the effects of different environments and cultivars on quantity and quality of bread wheat. The experiments were laid out in a randomized complete block design arranged with three replicates. Eight wheat cultivars (Pishgam, Sirvan, Parsi, Bahar, Pishtaz, Sepahan, Sivand and Arg) were selected for evaluation. Grain and biological yields, protein and wet gluten contents, hectoliter weight, and Zeleny sedimentation value were measured. The results indicated that the main effects of year and cultivar were significant on grain and biological yields, hectoliter weight, and Zeleny sedimentation value. There were significant differences in the interaction effect of year × cultivar on protein and wet gluten contents. Although, Parsi cultivar contained the highest grain yield and hectoliter weight (averaged by years, 6603.83 kg ha⁻¹ and 78.10 kg hl⁻¹, respectively), the greatest protein content, and Zeleny sedimentation value belonged to Sivand (12.68% and 23.53 ml, respectively) and Sirvan (12.63% and 23.14 ml, respectively) cultivars. According to the results, there was a statistically significant correlation between grain yield, hectoliter weight, and rainfall during grain filling period. There was a negative and significant correlation between grain yield, Zeleny sedimentation value, and protein and wet gluten contents. Our findings suggested that Sivand and Sirvan cultivars are potentially suitable for making bread and could be cultivated in similar climates due to high protein content and Zeleny sedimentation value.

进行了为期六年的实验，研究了2011-17生长季之间籽粒灌浆期温度和降雨量的自然变化，以研究不同环境和品种对面包小麦数量和质量的影响。实验以随机重复的完整区组设计进行布局，并安排了三个重复。选择了八个小麦品种（Pishgam，Sirvan，Parsi，Bahar，Pishtaz，Sepahan，Sivand和Arg）进行评估。测量谷物和生物学产量，蛋白质和湿面筋含量，百升重量和Zeleny沉降值。结果表明，年和品种的主要影响对谷物和生物学产量，百升重量和Zeleny沉降值具有显着影响。年×品种对蛋白质和湿面筋含量的交互作用存在显着差异。虽然，帕尔西（Parsi）品种的谷物产量和百升重量最高（按年平均计6603.83千克公顷）^-1和78.10 kg hl ^-1），最大的蛋白质含量和Zeleny沉降值分别属于Sivand（分别为12.68％和23.53 ml）和Sirvan（分别为12.63％和23.14 ml）品种。根据结果​​，在灌浆期谷物产量，百升重量与降雨量之间存在统计学上的显着相关性。谷物产量，Zeleny沉降值与蛋白质和湿面筋含量之间呈负相关且显着相关。我们的发现表明，Sivand和Sirvan品种潜在地适合制作面包，并且由于蛋白质含量高和Zeleny沉降值高，可以在相似的气候下进行栽培。